\begin{tikzpicture}
    \tkzDefPoints{0/0/O, -1.5/1/A, -1.3/-0.8/B}
    \tkzDefPointOnLine[pos=1.6](A,O)  \tkzGetPoint{A'}
    \tkzDefPointOnLine[pos=1.6](B,O)  \tkzGetPoint{B'}

    \tkzDrawPolygon(A,A',B',B)
    \tkzLabelPoints[above](O)
    \tkzLabelPoints[left](A,B)
    \tkzLabelPoints[right](A',B')
\end{tikzpicture}

